Nansi Lake is a beautiful pearl inlaid in Jining, Shandong Province. Recently, there are many tourists on Nansi Lake. In the depths of hundreds of thousands of acres of lotus, people pick up lotus and play in the water, watch cormorant performances, weddings on the lake, and listen to the full charm of the Duan Drum Tune and the fishing drum pendant... Take a boat to visit the ancient canal, play the soil pipa, and sing a few words, "The sun is going to set in the west, and the Nansi Lake is quiet..." Lotus fields, water and water are green, affecting the body and mind; The ancient and modern charm has intoxicated the footsteps of tourists. Today, the scenery of the Great Lake is picturesque. "Nansi Lake is shining with sunshine and white sails like clouds..." Boats and pleasure boats carrying tourists come and go on the rippling lake, and melodious songs resound over the lake. Recently, a tourist team from Yanjiao, Hebei Province boarded a cruise ship from the main ferry of Nansi Lake and headed for the deep lake. After 30 minutes, the cruise ship docked and was divided into several small boats. Tourists rowed with poles and slowly entered the Inner Lake scenic area, and the lake birds cheered and flapped their wings to take off. Race for ferry, race for ferry, startle a flock of gulls and egrets. "Mr. Ge, the tourist, muttered to himself, quickly picked up his camera and pressed the shutter. It's so beautiful, "the tourists praised the surrounding scenery in unison. The scenery in front of us has been "blocked" by the lotus. From a distance, a lake with clear water, 100000 mu of lotus spread across the surface of the lake, and Nansi Lake has become a "sea of flowers". It is said that the lunch is famous food in Nansi Lake, such as "grass carp smearing pan cake", "old turtle leaning on the riverside (turtle stewed in lake water)", and tourists can't wait to taste it. It is reported that Nansi Lake Scenic Area is a 5A level tourist attraction. It is marked by the "Lotus Festival" in July every year, and tourists come in great crowds during the peak tourist season. According to interviews with tourists, most people are attracted by the clear water of a lake. In 2022, it received a total of 1.081 million tourists and achieved a comprehensive tourism revenue of 650 million yuan. This was unimaginable in the past, "recalled tour guide Wang Xingjin. In 2001, when the country confirmed that the eastern route of the South to North Water Diversion Project passed through the local Nansi Lake, the water quality in the lake area was generally inferior to Class V. In order to achieve water quality standards and ensure that a clear stream of water flows northward, Weishan County, which thrives due to the lake and is adjacent to the water, has made up its mind to implement the "key tackling and comprehensive remediation" pollution control work method, and achieve the magnificent transformation of Nansi Lake from "soy sauce lake" to "ecological lake". The clock was turned back to 10:50 a.m. on September 5, 2009. With several loud "booms", eight small thermal power units of Nansi Lake Coal Power Company, which had operated for 53 years, were successfully blasted, and the first shot of iron fisted pollution control was fired at Nansi Lake. Then, under the coordination and support of Jining, Weishan County signed a river basin horizontal ecological compensation agreement with eight neighboring counties (cities and districts). All 67 rivers in the county have been included in the management of information platforms. The water quality in the Nansihu Lake area has leapt from worse than Class V to Class III, and the fishes with high water quality requirements such as whitebait, mandarin fish and saury that have been extinct for many years have returned to Nansi Lake. The return of rare birds, birds and creatures is the best witness to the ecological improvement of Nansi Lake. In 2021, Zhao Mai, a bird photographer in Weishan County, accidentally found two strange looking green headed ducks when he was creating in Nansi Lake National Wetland Park. These are Baer's pochard known as "giant pandas in birds". This discovery led to